Multicam: Can I use clips with their own audio track?

With Multicam feature, can I sync up audio for each camera shot, and use just the audio from each shot when switching shots with Multicam? Or does there have to be a "Master" audio clip?

If you open the Multicam sequence in the timeline, can you perform J and L cuts?

Can I open the Multicam sequence in the timeline, and add more audio tracks?

Thanks in advance.